ojluni/src/main/java/sun/security/pkcs11/P11ECKeyFactory.java - platform/libcore.git - Git at Google

 /*
  * Copyright (c) 2006, 2011, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Oracle in the LICENSE file that accompanied this code.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */

 package sun.security.pkcs11;

 import java.io.IOException;
 import java.math.BigInteger;

 import java.security.*;
 import java.security.interfaces.*;
 import java.security.spec.*;

 import sun.security.ec.ECPublicKeyImpl;
 import sun.security.ec.ECParameters;
 import sun.security.ec.NamedCurve;

 import static sun.security.pkcs11.TemplateManager.*;
 import sun.security.pkcs11.wrapper.*;
 import static sun.security.pkcs11.wrapper.PKCS11Constants.*;

 import sun.security.util.DerValue;

 /**
  * EC KeyFactory implemenation.
  *
  * @author  Andreas Sterbenz
  * @since   1.6
  */
 final class P11ECKeyFactory extends P11KeyFactory {

     P11ECKeyFactory(Token token, String algorithm) {
         super(token, algorithm);
     }

     static ECParameterSpec getECParameterSpec(String name) {
         return NamedCurve.getECParameterSpec(name);
     }

     static ECParameterSpec getECParameterSpec(int keySize) {
         return NamedCurve.getECParameterSpec(keySize);
     }

     // Check that spec is a known supported curve and convert it to our
     // ECParameterSpec subclass. If not possible, return null.
     static ECParameterSpec getECParameterSpec(ECParameterSpec spec) {
         return ECParameters.getNamedCurve(spec);
     }

     static ECParameterSpec decodeParameters(byte[] params) throws IOException {
         return ECParameters.decodeParameters(params);
     }

     static byte[] encodeParameters(ECParameterSpec params) {
         return ECParameters.encodeParameters(params);
     }

     static ECPoint decodePoint(byte[] encoded, EllipticCurve curve) throws IOException {
         return ECParameters.decodePoint(encoded, curve);
     }

     // Used by ECDH KeyAgreement
     static byte[] getEncodedPublicValue(PublicKey key) throws InvalidKeyException {
         if (key instanceof ECPublicKeyImpl) {
             return ((ECPublicKeyImpl)key).getEncodedPublicValue();
         } else if (key instanceof ECPublicKey) {
             ECPublicKey ecKey = (ECPublicKey)key;
             ECPoint w = ecKey.getW();
             ECParameterSpec params = ecKey.getParams();
             return ECParameters.encodePoint(w, params.getCurve());
         } else {
             // should never occur
             throw new InvalidKeyException
                 ("Key class not yet supported: " + key.getClass().getName());
         }
     }

     PublicKey implTranslatePublicKey(PublicKey key) throws InvalidKeyException {
         try {
             if (key instanceof ECPublicKey) {
                 ECPublicKey ecKey = (ECPublicKey)key;
                 return generatePublic(
                     ecKey.getW(),
                     ecKey.getParams()
                 );
             } else if ("X.509".equals(key.getFormat())) {
                 // let Sun provider parse for us, then recurse
                 byte[] encoded = key.getEncoded();
                 key = new sun.security.ec.ECPublicKeyImpl(encoded);
                 return implTranslatePublicKey(key);
             } else {
                 throw new InvalidKeyException("PublicKey must be instance "
                         + "of ECPublicKey or have X.509 encoding");
             }
         } catch (PKCS11Exception e) {
             throw new InvalidKeyException("Could not create EC public key", e);
         }
     }

     PrivateKey implTranslatePrivateKey(PrivateKey key)
             throws InvalidKeyException {
         try {
             if (key instanceof ECPrivateKey) {
                 ECPrivateKey ecKey = (ECPrivateKey)key;
                 return generatePrivate(
                     ecKey.getS(),
                     ecKey.getParams()
                 );
             } else if ("PKCS#8".equals(key.getFormat())) {
                 // let Sun provider parse for us, then recurse
                 byte[] encoded = key.getEncoded();
                 key = new sun.security.ec.ECPrivateKeyImpl(encoded);
                 return implTranslatePrivateKey(key);
             } else {
                 throw new InvalidKeyException("PrivateKey must be instance "
                         + "of ECPrivateKey or have PKCS#8 encoding");
             }
         } catch (PKCS11Exception e) {
             throw new InvalidKeyException("Could not create EC private key", e);
         }
     }

     // see JCA spec
     protected PublicKey engineGeneratePublic(KeySpec keySpec)
             throws InvalidKeySpecException {
         token.ensureValid();
         if (keySpec instanceof X509EncodedKeySpec) {
             try {
                 byte[] encoded = ((X509EncodedKeySpec)keySpec).getEncoded();
                 PublicKey key = new sun.security.ec.ECPublicKeyImpl(encoded);
                 return implTranslatePublicKey(key);
             } catch (InvalidKeyException e) {
                 throw new InvalidKeySpecException
                         ("Could not create EC public key", e);
             }
         }
         if (keySpec instanceof ECPublicKeySpec == false) {
             throw new InvalidKeySpecException("Only ECPublicKeySpec and "
                 + "X509EncodedKeySpec supported for EC public keys");
         }
         try {
             ECPublicKeySpec ec = (ECPublicKeySpec)keySpec;
             return generatePublic(
                 ec.getW(),
                 ec.getParams()
             );
         } catch (PKCS11Exception e) {
             throw new InvalidKeySpecException
                 ("Could not create EC public key", e);
         }
     }

     // see JCA spec
     protected PrivateKey engineGeneratePrivate(KeySpec keySpec)
             throws InvalidKeySpecException {
         token.ensureValid();
         if (keySpec instanceof PKCS8EncodedKeySpec) {
             try {
                 byte[] encoded = ((PKCS8EncodedKeySpec)keySpec).getEncoded();
                 PrivateKey key = new sun.security.ec.ECPrivateKeyImpl(encoded);
                 return implTranslatePrivateKey(key);
             } catch (GeneralSecurityException e) {
                 throw new InvalidKeySpecException
                         ("Could not create EC private key", e);
             }
         }
         if (keySpec instanceof ECPrivateKeySpec == false) {
             throw new InvalidKeySpecException("Only ECPrivateKeySpec and "
                 + "PKCS8EncodedKeySpec supported for EC private keys");
         }
         try {
             ECPrivateKeySpec ec = (ECPrivateKeySpec)keySpec;
             return generatePrivate(
                 ec.getS(),
                 ec.getParams()
             );
         } catch (PKCS11Exception e) {
             throw new InvalidKeySpecException
                 ("Could not create EC private key", e);
         }
     }

     private PublicKey generatePublic(ECPoint point, ECParameterSpec params) throws PKCS11Exception {
         byte[] encodedParams = ECParameters.encodeParameters(params);
         byte[] encodedPoint =
             ECParameters.encodePoint(point, params.getCurve());

         // Check whether the X9.63 encoding of an EC point shall be wrapped
         // in an ASN.1 OCTET STRING
         if (!token.config.getUseEcX963Encoding()) {
             try {
                 encodedPoint =
                     new DerValue(DerValue.tag_OctetString, encodedPoint)
                         .toByteArray();
             } catch (IOException e) {
                 throw new
                     IllegalArgumentException("Could not DER encode point", e);
             }
         }

         CK_ATTRIBUTE[] attributes = new CK_ATTRIBUTE[] {
             new CK_ATTRIBUTE(CKA_CLASS, CKO_PUBLIC_KEY),
             new CK_ATTRIBUTE(CKA_KEY_TYPE, CKK_EC),
             new CK_ATTRIBUTE(CKA_EC_POINT, encodedPoint),
             new CK_ATTRIBUTE(CKA_EC_PARAMS, encodedParams),
         };
         attributes = token.getAttributes
                 (O_IMPORT, CKO_PUBLIC_KEY, CKK_EC, attributes);
         Session session = null;
         try {
             session = token.getObjSession();
             long keyID = token.p11.C_CreateObject(session.id(), attributes);
             return P11Key.publicKey
                 (session, keyID, "EC", params.getCurve().getField().getFieldSize(), attributes);
         } finally {
             token.releaseSession(session);
         }
     }

     private PrivateKey generatePrivate(BigInteger s, ECParameterSpec params) throws PKCS11Exception {
         byte[] encodedParams = ECParameters.encodeParameters(params);
         CK_ATTRIBUTE[] attributes = new CK_ATTRIBUTE[] {
             new CK_ATTRIBUTE(CKA_CLASS, CKO_PRIVATE_KEY),
             new CK_ATTRIBUTE(CKA_KEY_TYPE, CKK_EC),
             new CK_ATTRIBUTE(CKA_VALUE, s),
             new CK_ATTRIBUTE(CKA_EC_PARAMS, encodedParams),
         };
         attributes = token.getAttributes
                 (O_IMPORT, CKO_PRIVATE_KEY, CKK_EC, attributes);
         Session session = null;
         try {
             session = token.getObjSession();
             long keyID = token.p11.C_CreateObject(session.id(), attributes);
             return P11Key.privateKey
                 (session, keyID, "EC", params.getCurve().getField().getFieldSize(), attributes);
         } finally {
             token.releaseSession(session);
         }
     }

     KeySpec implGetPublicKeySpec(P11Key key, Class keySpec, Session[] session)
             throws PKCS11Exception, InvalidKeySpecException {
         if (ECPublicKeySpec.class.isAssignableFrom(keySpec)) {
             session[0] = token.getObjSession();
             CK_ATTRIBUTE[] attributes = new CK_ATTRIBUTE[] {
                 new CK_ATTRIBUTE(CKA_EC_POINT),
                 new CK_ATTRIBUTE(CKA_EC_PARAMS),
             };
             token.p11.C_GetAttributeValue(session[0].id(), key.keyID, attributes);
             try {
                 ECParameterSpec params = decodeParameters(attributes[1].getByteArray());
                 ECPoint point = decodePoint(attributes[0].getByteArray(), params.getCurve());
                 return new ECPublicKeySpec(point, params);
             } catch (IOException e) {
                 throw new InvalidKeySpecException("Could not parse key", e);
             }
         } else { // X.509 handled in superclass
             throw new InvalidKeySpecException("Only ECPublicKeySpec and "
                 + "X509EncodedKeySpec supported for EC public keys");
         }
     }

     KeySpec implGetPrivateKeySpec(P11Key key, Class keySpec, Session[] session)
             throws PKCS11Exception, InvalidKeySpecException {
         if (ECPrivateKeySpec.class.isAssignableFrom(keySpec)) {
             session[0] = token.getObjSession();
             CK_ATTRIBUTE[] attributes = new CK_ATTRIBUTE[] {
                 new CK_ATTRIBUTE(CKA_VALUE),
                 new CK_ATTRIBUTE(CKA_EC_PARAMS),
             };
             token.p11.C_GetAttributeValue(session[0].id(), key.keyID, attributes);
             try {
                 ECParameterSpec params = decodeParameters(attributes[1].getByteArray());
                 return new ECPrivateKeySpec(attributes[0].getBigInteger(), params);
             } catch (IOException e) {
                 throw new InvalidKeySpecException("Could not parse key", e);
             }
         } else { // PKCS#8 handled in superclass
             throw new InvalidKeySpecException("Only ECPrivateKeySpec "
                 + "and PKCS8EncodedKeySpec supported for EC private keys");
         }
     }

     KeyFactory implGetSoftwareFactory() throws GeneralSecurityException {
         return sun.security.ec.ECKeyFactory.INSTANCE;
     }

 }
	/*
	* Copyright (c) 2006, 2011, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/

	package sun.security.pkcs11;

	import java.io.IOException;
	import java.math.BigInteger;

	import java.security.*;
	import java.security.interfaces.*;
	import java.security.spec.*;

	import sun.security.ec.ECPublicKeyImpl;
	import sun.security.ec.ECParameters;
	import sun.security.ec.NamedCurve;

	import static sun.security.pkcs11.TemplateManager.*;
	import sun.security.pkcs11.wrapper.*;
	import static sun.security.pkcs11.wrapper.PKCS11Constants.*;

	import sun.security.util.DerValue;

	/**
	* EC KeyFactory implemenation.
	*
	* @author Andreas Sterbenz
	* @since 1.6
	*/
	final class P11ECKeyFactory extends P11KeyFactory {

	P11ECKeyFactory(Token token, String algorithm) {
	super(token, algorithm);
	}

	static ECParameterSpec getECParameterSpec(String name) {
	return NamedCurve.getECParameterSpec(name);
	}

	static ECParameterSpec getECParameterSpec(int keySize) {
	return NamedCurve.getECParameterSpec(keySize);
	}

	// Check that spec is a known supported curve and convert it to our
	// ECParameterSpec subclass. If not possible, return null.
	static ECParameterSpec getECParameterSpec(ECParameterSpec spec) {
	return ECParameters.getNamedCurve(spec);
	}

	static ECParameterSpec decodeParameters(byte[] params) throws IOException {
	return ECParameters.decodeParameters(params);
	}

	static byte[] encodeParameters(ECParameterSpec params) {
	return ECParameters.encodeParameters(params);
	}

	static ECPoint decodePoint(byte[] encoded, EllipticCurve curve) throws IOException {
	return ECParameters.decodePoint(encoded, curve);
	}

	// Used by ECDH KeyAgreement
	static byte[] getEncodedPublicValue(PublicKey key) throws InvalidKeyException {
	if (key instanceof ECPublicKeyImpl) {
	return ((ECPublicKeyImpl)key).getEncodedPublicValue();
	} else if (key instanceof ECPublicKey) {
	ECPublicKey ecKey = (ECPublicKey)key;
	ECPoint w = ecKey.getW();
	ECParameterSpec params = ecKey.getParams();
	return ECParameters.encodePoint(w, params.getCurve());
	} else {
	// should never occur
	throw new InvalidKeyException
	("Key class not yet supported: " + key.getClass().getName());
	}
	}

	PublicKey implTranslatePublicKey(PublicKey key) throws InvalidKeyException {
	try {
	if (key instanceof ECPublicKey) {
	ECPublicKey ecKey = (ECPublicKey)key;
	return generatePublic(
	ecKey.getW(),
	ecKey.getParams()
	);
	} else if ("X.509".equals(key.getFormat())) {
	// let Sun provider parse for us, then recurse
	byte[] encoded = key.getEncoded();
	key = new sun.security.ec.ECPublicKeyImpl(encoded);
	return implTranslatePublicKey(key);
	} else {
	throw new InvalidKeyException("PublicKey must be instance "
	+ "of ECPublicKey or have X.509 encoding");
	}
	} catch (PKCS11Exception e) {
	throw new InvalidKeyException("Could not create EC public key", e);
	}
	}

	PrivateKey implTranslatePrivateKey(PrivateKey key)
	throws InvalidKeyException {
	try {
	if (key instanceof ECPrivateKey) {
	ECPrivateKey ecKey = (ECPrivateKey)key;
	return generatePrivate(
	ecKey.getS(),
	ecKey.getParams()
	);
	} else if ("PKCS#8".equals(key.getFormat())) {
	// let Sun provider parse for us, then recurse
	byte[] encoded = key.getEncoded();
	key = new sun.security.ec.ECPrivateKeyImpl(encoded);
	return implTranslatePrivateKey(key);
	} else {
	throw new InvalidKeyException("PrivateKey must be instance "
	+ "of ECPrivateKey or have PKCS#8 encoding");
	}
	} catch (PKCS11Exception e) {
	throw new InvalidKeyException("Could not create EC private key", e);
	}
	}

	// see JCA spec
	protected PublicKey engineGeneratePublic(KeySpec keySpec)
	throws InvalidKeySpecException {
	token.ensureValid();
	if (keySpec instanceof X509EncodedKeySpec) {
	try {
	byte[] encoded = ((X509EncodedKeySpec)keySpec).getEncoded();
	PublicKey key = new sun.security.ec.ECPublicKeyImpl(encoded);
	return implTranslatePublicKey(key);
	} catch (InvalidKeyException e) {
	throw new InvalidKeySpecException
	("Could not create EC public key", e);
	}
	}
	if (keySpec instanceof ECPublicKeySpec == false) {
	throw new InvalidKeySpecException("Only ECPublicKeySpec and "
	+ "X509EncodedKeySpec supported for EC public keys");
	}
	try {
	ECPublicKeySpec ec = (ECPublicKeySpec)keySpec;
	return generatePublic(
	ec.getW(),
	ec.getParams()
	);
	} catch (PKCS11Exception e) {
	throw new InvalidKeySpecException
	("Could not create EC public key", e);
	}
	}

	// see JCA spec
	protected PrivateKey engineGeneratePrivate(KeySpec keySpec)
	throws InvalidKeySpecException {
	token.ensureValid();
	if (keySpec instanceof PKCS8EncodedKeySpec) {
	try {
	byte[] encoded = ((PKCS8EncodedKeySpec)keySpec).getEncoded();
	PrivateKey key = new sun.security.ec.ECPrivateKeyImpl(encoded);
	return implTranslatePrivateKey(key);
	} catch (GeneralSecurityException e) {
	throw new InvalidKeySpecException
	("Could not create EC private key", e);
	}
	}
	if (keySpec instanceof ECPrivateKeySpec == false) {
	throw new InvalidKeySpecException("Only ECPrivateKeySpec and "
	+ "PKCS8EncodedKeySpec supported for EC private keys");
	}
	try {
	ECPrivateKeySpec ec = (ECPrivateKeySpec)keySpec;
	return generatePrivate(
	ec.getS(),
	ec.getParams()
	);
	} catch (PKCS11Exception e) {
	throw new InvalidKeySpecException
	("Could not create EC private key", e);
	}
	}

	private PublicKey generatePublic(ECPoint point, ECParameterSpec params) throws PKCS11Exception {
	byte[] encodedParams = ECParameters.encodeParameters(params);
	byte[] encodedPoint =
	ECParameters.encodePoint(point, params.getCurve());

	// Check whether the X9.63 encoding of an EC point shall be wrapped
	// in an ASN.1 OCTET STRING
	if (!token.config.getUseEcX963Encoding()) {
	try {
	encodedPoint =
	new DerValue(DerValue.tag_OctetString, encodedPoint)
	.toByteArray();
	} catch (IOException e) {
	throw new
	IllegalArgumentException("Could not DER encode point", e);
	}
	}

	CK_ATTRIBUTE[] attributes = new CK_ATTRIBUTE[] {
	new CK_ATTRIBUTE(CKA_CLASS, CKO_PUBLIC_KEY),
	new CK_ATTRIBUTE(CKA_KEY_TYPE, CKK_EC),
	new CK_ATTRIBUTE(CKA_EC_POINT, encodedPoint),
	new CK_ATTRIBUTE(CKA_EC_PARAMS, encodedParams),
	};
	attributes = token.getAttributes
	(O_IMPORT, CKO_PUBLIC_KEY, CKK_EC, attributes);
	Session session = null;
	try {
	session = token.getObjSession();
	long keyID = token.p11.C_CreateObject(session.id(), attributes);
	return P11Key.publicKey
	(session, keyID, "EC", params.getCurve().getField().getFieldSize(), attributes);
	} finally {
	token.releaseSession(session);
	}
	}

	private PrivateKey generatePrivate(BigInteger s, ECParameterSpec params) throws PKCS11Exception {
	byte[] encodedParams = ECParameters.encodeParameters(params);
	CK_ATTRIBUTE[] attributes = new CK_ATTRIBUTE[] {
	new CK_ATTRIBUTE(CKA_CLASS, CKO_PRIVATE_KEY),
	new CK_ATTRIBUTE(CKA_KEY_TYPE, CKK_EC),
	new CK_ATTRIBUTE(CKA_VALUE, s),
	new CK_ATTRIBUTE(CKA_EC_PARAMS, encodedParams),
	};
	attributes = token.getAttributes
	(O_IMPORT, CKO_PRIVATE_KEY, CKK_EC, attributes);
	Session session = null;
	try {
	session = token.getObjSession();
	long keyID = token.p11.C_CreateObject(session.id(), attributes);
	return P11Key.privateKey
	(session, keyID, "EC", params.getCurve().getField().getFieldSize(), attributes);
	} finally {
	token.releaseSession(session);
	}
	}

	KeySpec implGetPublicKeySpec(P11Key key, Class keySpec, Session[] session)
	throws PKCS11Exception, InvalidKeySpecException {
	if (ECPublicKeySpec.class.isAssignableFrom(keySpec)) {
	session[0] = token.getObjSession();
	CK_ATTRIBUTE[] attributes = new CK_ATTRIBUTE[] {
	new CK_ATTRIBUTE(CKA_EC_POINT),
	new CK_ATTRIBUTE(CKA_EC_PARAMS),
	};
	token.p11.C_GetAttributeValue(session[0].id(), key.keyID, attributes);
	try {
	ECParameterSpec params = decodeParameters(attributes[1].getByteArray());
	ECPoint point = decodePoint(attributes[0].getByteArray(), params.getCurve());
	return new ECPublicKeySpec(point, params);
	} catch (IOException e) {
	throw new InvalidKeySpecException("Could not parse key", e);
	}
	} else { // X.509 handled in superclass
	throw new InvalidKeySpecException("Only ECPublicKeySpec and "
	+ "X509EncodedKeySpec supported for EC public keys");
	}
	}

	KeySpec implGetPrivateKeySpec(P11Key key, Class keySpec, Session[] session)
	throws PKCS11Exception, InvalidKeySpecException {
	if (ECPrivateKeySpec.class.isAssignableFrom(keySpec)) {
	session[0] = token.getObjSession();
	CK_ATTRIBUTE[] attributes = new CK_ATTRIBUTE[] {
	new CK_ATTRIBUTE(CKA_VALUE),
	new CK_ATTRIBUTE(CKA_EC_PARAMS),
	};
	token.p11.C_GetAttributeValue(session[0].id(), key.keyID, attributes);
	try {
	ECParameterSpec params = decodeParameters(attributes[1].getByteArray());
	return new ECPrivateKeySpec(attributes[0].getBigInteger(), params);
	} catch (IOException e) {
	throw new InvalidKeySpecException("Could not parse key", e);
	}
	} else { // PKCS#8 handled in superclass
	throw new InvalidKeySpecException("Only ECPrivateKeySpec "
	+ "and PKCS8EncodedKeySpec supported for EC private keys");
	}
	}

	KeyFactory implGetSoftwareFactory() throws GeneralSecurityException {
	return sun.security.ec.ECKeyFactory.INSTANCE;
	}

	}